When the trust began its operations in Delhi in 2003, there was one mobile unit donated by the Member of Parliament (MP) Shri Kapil Sibal. Initially, the unit had two doctors and a nurse on board. In March 2007, the Ila Trust received their second mobile clinic donated by the Elton John AIDS Foundation. In March 2012, the Ila Trust received their third mobile clinic donated by a well-wisher. It is now staffed with eleven  doctors, Six Screener, four pharmacists and three drivers.

The clinics go to predefined locations around old Delhi and the Okhla Industrial Area. It operates six days a week with seven morning sessions and four afternoon sessions. Treatment is provided for general ailments as well as chronic diseases such as diabetes and AIDS. The early morning sessions provide an opportunity for working people to visit doctors before their workday. The primary objective of the afternoon sessions is to serve women and children. A detailed schedule of the operation is provided below. Between the three clinics, the Ila Trust treated 1,79,297 patients in 2013. All expenses towards treating the patients (tests, medicine and treatment) is borne by the Trust